"All the flooding and all the droughts have a reason and although proving the reason is quite difficult and scientists still have problems with proving it, you can just look around and say there is a problem, " he said.

BBC: Congo rebel soldiers

Still, it is unclear whether technical problems alone would have scuttled the protocol.

ECONOMIST: Has George Bush ever met a treaty that he liked?

Visual art institutions still have problems knowing what do with this so it's often easier to put my work on the outside of buildings.

BBC: Chesil Beach waves to wash over central London